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seed production stand
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seed production stand
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农学
母树林
释
seed production stand
母树林
在优良天然林或确知种源的优良人工林基础上,经过留优去劣的疏伐,为生产遗传品质较好的林木种子而营建的采种林分。
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risks associated with physical activity and exercise
risk-sensitive stochastic control problem
risks in tourism
risk society
Risks of Investment Program
risk spreading
risk subjects in flight test
risk surveillance of food safety
risk theory
risk transfer
risk transfer of resource development
risk warning
risky
risky shift
risk zoning of agrometeorological disasters
RISM
Risner
R-isomorphism
risorius
Rissanen
Risto Rasa
Risto Tapani Ahti
RI system
RIT
Rita Dove
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